SCR440 40CR SAE 5140 Hot rolled alloy steel round bar
Standard steel GB in China is 40Cr, the German DIN standard material No. 1.17035/1.7045, German standard DIN grade 41Cr4/42Gr4, EN grade 18 British standard, the British standard BS steel 41Cr4, France AFNOR 42C4 France NF steel standard, standard grade of steel 38Cr4/41Cr4, Italy UNI 41Cr4 Belgium NBN steel standard, standard grade of steel 42Cr4, Sweden SS standard grade 2245. The American AISI/SAE/ASTM standard grade 5140, the Japanese JIS standard grade SCr440 (H) /SCr440, the international organization for standardization ISO standard steel 41Cr4.
1.Products :ASTM 5140/40Cr/41Cr4 Hot Rolled Steel round bar
Grades: ASTM 5140/40Cr/41Cr4
Delivery condition :Hot rolled, surface black.
Packing : by bundles.
2. SAE 5140 40Cr 41Cr4Steel equivalent grade and chemical composition
| Standard |
Grade |
C |
Cr |
Mn |
Si |
P |
S |
| GB/T3077 |
40Cr |
0.37-0.44 |
0.8-1.1 |
0.5-0.8 |
0.17-0.37 |
0.035 |
0.035 |
| TOCT 4543 |
40X |
0.36-0.44 |
0.8-1.1 |
0.5-0.8 |
0.17-0.37 |
0.035 |
0.035 |
| JIS G4053 |
SCr440 |
0.38-0.43 |
0.9-1.2 |
0.6-0.9 |
0.15-0.35 |
0.03 |
0.03 |
| ASTN A29/A29M |
5140 |
0.38-0.43 |
0.7-0.9 |
0.6-0.9 |
0.15-0.35 |
0.03 |
0.03 |
| ISO 693 |
41Cr4 |
0.38-0.45 |
0.91.2 |
0.6-0.9 |
0.1-0.4 |
0.035 |
0.035 |
| EN 10083 |
41Cr4 |
0.38-0.45 |
0.91.2 |
0.6-0.9 |
0.1-0.4 |
0.025 |
0.035 |
3.Mechanical properties:
Sample blank size (mm):25
The first quenching heating temperature (ºC):850; coolant: Oil
Second quenching heating temperature (ºC):-
Tempering heating temperature (ºC):520;
Tensile strength (σb/MPa): ≥980
The yield point (σs/MPa): ≥785
Elongation (δ5/%): ≥9
Section shrinkage (ψ/%): ≥45
Impact absorbing energy (Aku2/J): ≥47
Brinell hardness (HBS100/3000) (high temperature annealing or tempering): ≤207
4.Delievery condition:
1.Both end of each bar must be cut.
2.Show Heat No. on each bar
3.Surface condition: The surface of the bar shall be free cracks, scar and wrinkles at affect the use of the billets.
In case there is the above-mentioned defect.it shall be removed.
4.The mill test certificate shall show the chemical composition, and it is guaranteed that the chemical composition
5.Sizes we can supply:
| Sizes details |
diameter |
16-350mm |
| length |
1-9m(canbe customerized) |
| Sizes tolerance |
length |
-0 / 50mm(max) |
| Straightness |
3mm/m(max) |
6.Capacity of our factory:3000tons per month
7.Delivery time : 7-30 days based on the sizes and quantity.
8.Payment term:TT or LC.
Audited Supplier 
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